Question

【题目】They love reading. These books are ______.

A. they B. them C. theirs D. their

Answer 1

【答案】C

【解析】

句意：他们喜欢读书。这些书是他们的。A. they主格；B. them宾格；C. theirs名词性物主代词；D. their形容词性物主代词。they只能用作句子的主语，排除A；their后面必须跟名词，排除D；这些书是它们，不符合题意，此处用theirs指代their books，故答案选C。